Slædepatruljen Sirius or informally Siriuspatruljen (The Sirius patrol) is a Danish unit and dog sled patrol conducting long-range reconnaissance (LRRP) and enforcing Danish sovereignty. The unit is operationally under the Greenland Command and administratively under the Royal Danish Navy. The patrol represents Denmark's military presence in Greenland.
The patrol operates in the northern and northeastern part of Greenland from the westcoast of Hall Land (Petermann Fjord and Glacier) 81°04′N 61°40′W / 81.067°N 61.667°W to Kap Biot north of Fleming Fjord 71°53′N 22°33′W / 71.883°N 22.55°W. The distance as the crow flies is circa 2100 km, but the length of the coast following all the fjords is far greater, 16.000 km, and the Greenland ice
http://en.wikipedia.org/wiki/Sirius_Patrol

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